I see Yarnstorm is talking about comments today, and that's a subject that's been bothering me for a while. I used to answer every single comment by a personal email as soon as I possibly could. I have got terribly behind with that because of other commitments, and I get frustrated, too, when a reply and is bounced back because the commenter has given a non-functioning email address. So what's the answer? I really do welcome the comments as they add so much to the site, and I try always to follow any links, etc. given, but as I feel proper acknowledgement is required where possible I may just start doing as other bloggers do and "commenting on the comments".